Web-feeding and cutting machine



Aug. 16, 1932. H. A. VsEvlG-NE-z was FEEDING AND GUTTING CHINE OriginalFiled Sept. 27, 1929 3 Sheets-Sheet l All@ 16, 1932 H. A. sr-:vlGN

WEB FEEDING' AND CUTTING ACHINI Original Filed Sept. 27. 1929 I5Sheets-Sheet 3 Patented Aug. 1932 UNITED 4sTATlzs PATENT oFFlcE HENRI A.S'VIGN, OF WINTHBOP, MASSACHUSETTS, ASSIGNOB TO NATIONAL BREAD WRAPPINGMACHINE COMPANY, 0F QBINGFBLD, MASSACHUSETTS, A CORPORA- TION 0FMASSACHUSETTS l WEB-FEEDING AND CUTTING MACHINE 'Original applicationilled September 27, 1929, Serial Io. 395,808. Divided and thisapplication led March 80, 1,931. vSerial lo. 528,183. l

This invention relates to machines for l feeding and cutting a web ofsheet material such as aper, and has particular reference to machinesadapted to vary the extent or distance of feed of the web to a cutter,in-

order to sever the web into sections of different sizes.

The vmachine illustrated and described is similar in principle andoperation to that which is described and claimed in Letters Patent No.1,412,754, issued April 11, 1922 divisional application is especiallyuseful in.

machines for wrapping loaves of bread, as described in the LettersPatents just referred to, I do not limit myself thereto, as thewebfeeding and cutting mechanism is useful for many other purposes whereit is desirable to sever a web into sections of di'erent lengthsaccording to. the needs of other articles with which the sections are.to be associated. To facilitate an understanding of the presentinvention however, it will be mainly described as employed in a breadWrapping'machine.

The principal object ofthe present invention is to provide a machinewhich is readily convertible to either one of avariety of adjustedconditions, so that a single machine will successively supply sectionscut from a web, which sections will be of a size or area best suited tothe requirements of other articles to be associated with the sections.

With said obj ectin view, and others hereinafter described, theinvention consists in the construction and combination of partssubstantially as hereinafter described and claimed.

Of the accompanying drawings: Figure 1 represents a longitudinal sectionof a machine which includes my improvements.

Figure 2 represents a section on a horizontal line, illustrating some ofthe details.

Figure 3 is a view similar to a portion of Fi a re 1, on a larger scale.

igure 4 is a detail plan view of some of the parts shown in Figure 3;

Figure 5 represents a section on line 5-5 of Figure 3.

Similar reference characters indicate similar parts or features in allof the views. In view of the fact that the invention is illustrated asembodied in a bread wrapping machine, although not limited thereto, aprelimlnary description will be given of some of the mechanism which isemployed in that particular type of machine, with the under- Standingthat if information is desired as to.

other parts of the machine, such as details of the mechanism whichcauses the bread to travel through the machine and be Wrap ed while intransit, reference may be had to tters Patent No. 1,808,181 of which thepresent ap lication is a division.

ortions of the frame of the machine are illustrated at 20. The articlesto be wrapped are placed on an inclined plate 21 (Fig. 2)

and pass therefrom onto a horizontal platev or floor 36 which isslotted. Pushers 38 ca'rried by al chain effect a cross-feeding of thearticles into the machine and onto a shelf member 47 (Fig. 1), fromwhich they are removed and elevated between wall plates 48, 49, bylifting fingers 52 carried by endless chains. While the articles aremoving upwardly, they are partially enwrapped in sections of paper cutfrom a web, as explained in the patent referred to. The web of paper s Pis drawn from a roll on a suitably mounted core 74. It passes undergravity rolls .75, then between members of a device which preventsretrograde movement of the web, such device being indicated as a wholeat 76, then over the feeding drum 77 carried by a shaft 66, and underthe upper roll` or rolls 78, and

then over 'a bed 7 9. The web is cut into sections by a knife 80, andeach section is engaged by an upwardly moving article. The completlon ofthe wrapping is effected at the top of the vertical chute through whichthey are elevated by the lifting fingers 52, and 100 by chains 84.

The mechanism for effecting the feed of the web P-V andcutting it intosections will now be described.

The frame'of the machine has a fixed ledge 143 (Fig. 3) on which ismounteda block 1 44 having what is termed the selector Shoe 145 hingedto it at 146. Said shoe is so located and so formed and supported aspresently described that av loaf of bread beingl pushed under it andinto the machine by' t eA cross-feed will swing the shoe 145 upward and,through the mechanism now to be described, automatically vary the lengthof'each wrapper section c ut from vthe web according to the' height ofthe particular loaf which raises said shoe. The said shoe has aexible-joint connection 147 with the outer end of. a lever 148 pivotallysupported at 149 and having a laterally movable extension v or inner arm150 connected to it by a vertical hinge pin 151. The inner endofvthe arm150 has a notch 152 iii one side (Fig. 4) and is laterally bevelled andserrated on the other side of 'its' tip as 'illustrated' at 153.` Saidserrated tip coacts, in operation, with the bevelled and serrated block154 which is carried by a disk that 'rotates with the feeding drum 7 7all in a manner similar to the mechanism illustrated in Figure 7 of thePatent 1,412,754 hereinbefore referred to.

As illustrated by comparing Figures 3.and 5, a stopshoulder 155 of amember 156 coacts withithe inner lend of the. compound lever 150, 148,tolimit the lower position occupied normally by the selector shoe 145.

Said member 156 is connected by a vertical lpivot 157 to a bracket15S-,fixed to the frame of the machine and therefore can swinglaterally.` Projecting laterally from the top of the member 156 is astud 159 adapted to act on a lever 160 which is pivotally supported at161 and has a roll 162 at its upper end.

Said roll moves to and fromv osition under the block 163 'which projectsrom the bearing 164 in which one end of the shaft of the upper rolls 78is mounted. The 'said bearing 164 is carried by the arm 165 projectingfrom the rock shaft 166 the rocking of which to effect intermittent feedof the web P accordingto whether or not the rolls 78 are lowered to gripthe web against the drum 77, will now be described.l

The lower end 167 of the lever 160 (Fig. 5) extends inwardly in asomewhat horizontal direction and is connected at 168 to the upper endof a link 169 the lower end of which is connected at 170 to the arm' 171(see dotted lines in Fig. 3) of a bellcrank lever pivotally supported at172 and having its other armfy 173 provided with a roll 174. The pivotpin 172 is carried by one end of a lever 175 pivoted at 176 to a fixedbracket 177. vA vertical rod 178 has a screw-threaded lower end.engaging an internally threaded stud 179 projecting from the lever 17 5,the upper end of A said 'rod passing through a stud projecting fromthemachine frame and havlng a suitable knob 180. By means of said knob therod 178 may be rotated so that its lower screw-threaded end will effectadjustment of the lever 17 5 for a purpose presently described. Toenable the amount of such adjustment to be visualized, a gage strip 181is connected to the end of the lever 17 5 and"- extends up through aguide eye of the machine frame and coacts with a scale 182 attached tosaid frame.

The lever has'a lugv 183 to coact with a suitable stop projecting fromthe machine frame, to limitvthe position to which'the lever may be swungin one direction.

A lever 185 (Figs. 3 and 5) is pivotallysupported at 176 and has a roll186'engaging a cam groove 187 in the disk 188 which rotates withtheshaft 66 and carries the serrated block 154, and said lever -185 hasalower port tion '.189 formed with a camedge 190 to act onthe roll l174of the arm 173 of the elbowv lever.

By the mechanism just described, especially the parts shown in the lowerportions of Figures 3 and 5, and including the adjusting rod 178,provision is made for ensuring proper length of feed of the web when itis advanced to the cutter by the action of the drum 77 and rolls 78, tosuit wide articles as well as narrow ones. When the articles are `Widethe wrapper sections must be longer than those for narrow articles. Themechanism just referred to permits this to be done without affecting theoperation of the selector feeding of the web P. By adjusting the rod 178(Figure 3) the lever 175 is adjusted so that its' bell-crank lever 173,171 is shifted up or. down so as to vary the period at which thedescribed lifting vof the feed rolls occurs,

and thereby cause a greater or lesser range of is similar to that ofsaid patent. It includes -from the lever arm 150. The upper end ofnemers a stop lever 191 (Fig. 3) pivotedv atv'q192 to the rock-shaft arm165 and having a notch 193 cooperating with a roll 194 projecting thelever 191 shifts under and from the detent lug 195. carried by the-shaft 114. As the structure and operation of this part of the;-

the present machine however', the knife framey is adjustable toward andfrom the nip of the web-feeding drum and rolls. To this end, the frameis mounted in suitable slideways and has al transverse shaft 199provided with a pinion 200 at each end, the said pinions engaging rackbars 201 (Fig. 2) supported by the ledges 143 of the machine frame (Fig.3). At one end the shaft 199 has a knob or hand wheel 202 by means ofwhich the shaft and its pinions may be rotated to change the position ofthe knife longitudinally of the machine; When the articles are wideones, the

' knife vis moved and set farther away from the nip of the feed rolls.As indicated in Figures 1' and 2, the bed plates 79, 79', which areseparated by a narrow space to permit the knife to act, are so connectedto the knife frame as to lmove with the latter when adjustment iseffected. Therefore the web is supported by said plates during theoperay tion of the knife regardless ofthe position of the knifelongitudinally of the machine. B means of a pointer 203 carried bv theknife frame, said pointer coacting with a scale 204 on the ledge 143,the degree of adjustment of the knife frame can be visualized.

To reciprocate the knife carrier 197, the rock shaft 205 has at each endan arm 206 provided with a roll 207 engaging a c am groove 208 in a disk209 carried by the shaft 114, and the arms 206 have slidable outersections 210 which a-ctuate the knife carrier vertically. In otherwords, the arms of the rock shaft are extensible to perform theirfunctions during any adjusted position of the knife frame.

The web P is moved toward the knife over a fixed bed strip 211 (Figs. 1and 2) and over the bed plate 79 and under the edge of the knife, theforward edge of the web extending across the chute between the wallplates 48, 49. The overlapping edges of the strip vancing edge of theweb to be .somewhat wavy transversely, and hence theneis less frictions]resistance to its advance.

Having now described my invention, I claim l 1. A machine forv feedingand cutting a web of paper, said machine having a supilort .ng v

for a rolled web of paper, rolls for fe the web, means under the controlof articles to be associated with sections cut from the web for varyingthe length of time of operation of said rolls, a cutter for severing theweb into sections, and "means for adjusting the lo cation of the cuttertoward or from the webfeeding rolls. i i

2. A machine forfeeding and cutting a web of paper, said machine havinga support for a. rolled web of paper, rolls for feeding the web, meansunder the control of articles to be associated with sections cut fromthe web for varying the length of time of operation of said rolls, aframe movable toward or from said rolls, a vertically-movable knifemounted in said frame, and means for varying the position of said framerelatively to said rolls.

3. A. machine for feeding and cutting a web of paper, said machinehaving a support for said rolls, a web-cutting knife mounted in said aframe, andl means for varying the position of said frame relatively tothe said rolls, the said fr'ame and a fixed part of the machine having acooperating pointer and scale to iny dicate the adjustment of the knife.

4. A wrapping machine having intermittently-separable rolls for feedinga web of paper, a cutter for severing the paper, means for controllingthe operation of the feed according to the vertical size of the articleto be wrapped, and means for altering the timing of the length of thefeedin o ration of said rolls, to vary the length 0% t e wrappersections cut .from the web according to whether the articles are wide ornarrow. Y

In testimony whereof I have aixed my signature.

HENRI A. sEvIGNE.

